方法:1、利用ps命令定位指定进程以及该进程的父进程;2、若使用“Kill -HUP”命令无法杀死指定进程,可杀死指定进程的父进程,语法为“kill -HUP 指定进程父ID”。
本文操作环境:centos 7系统、Dell G3电脑。
centos进程杀不死怎么办
发现centos系统发现有两个进程无法杀死,使用了kill PID和kill -9 PID以及kill -15 PID都无法生效
发现这个叫僵尸进程。
解决,如下:
ps -A -o stat,ppid,pid,cmd | grep -e '^[Zz]' | awk '{print $2}' | xargs kill -9
定位僵尸进程以及该僵尸进程的父进程
ps -A -ostat,ppid,pid,cmd |grep -e '^[Zz]'
使用Kill -HUP 僵尸进程ID来杀死僵尸进程,往往此种情况无法杀死僵尸进程,此时就需要杀死僵尸进程的父进程
kill -HUP 僵尸进程父ID
然后使用上面的语句查询该僵尸进程是否被杀死
ps -A -ostat,ppid,pid,cmd |grep -e '^[Zz]'
参数解读
-A 参数列出所有进程
-o 自定义输出字段 stat(状态)、ppid(进程父id)、pid(进程id)、cmd(命令)
因为状态为z或者Z的进程为僵尸进程,所以我们使用grep抓取stat状态为zZ进程
推荐教程:《centos教程》
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CentOS is an open source distribution based on RedHatEnterpriseLinux, focusing on stability and long-term support, suitable for a variety of server environments. 1. The design philosophy of CentOS is stable and suitable for web, database and application servers. 2. Use YUM as the package manager to release security updates regularly. 3. Simple installation, you can build a web server with a few commands. 4. Advanced features include enhanced security using SELinux. 5. Frequently asked questions such as network configuration and software dependencies can be debugged through nmcli and yumdeplist commands. 6. Performance optimization suggestions include tuning kernel parameters and using a lightweight web server.

CentOS is widely used in server management and web hosting. Specific methods include: 1) using yum and systemctl to manage the server, 2) install and configure Nginx for web hosting, 3) use top and mpstat to optimize performance, 4) correctly configure the firewall and manage disk space to avoid common problems.

CentOS is a stable, enterprise-grade Linux distribution suitable for server and enterprise environments. 1) It is based on RedHatEnterpriseLinux and provides a free, open source and compatible operating system. 2) CentOS uses the Yum package management system to simplify software installation and updates. 3) Support advanced automation management, such as using Ansible. 4) Common errors include package dependency and service startup issues, which can be solved through log files. 5) Performance optimization suggestions include the use of lightweight software, regular cleaning of the system and optimization of kernel parameters.

Alternatives to CentOS include RockyLinux, AlmaLinux, OracleLinux, and SLES. 1) RockyLinux and AlmaLinux provide RHEL-compatible binary packages and long-term support. 2) OracleLinux provides enterprise-level support and Ksplice technology. 3) SLES provides long-term support and stability, but commercial licensing may increase costs.

Alternatives to CentOS include UbuntuServer, Debian, Fedora, RockyLinux, and AlmaLinux. 1) UbuntuServer is suitable for basic operations, such as updating software packages and configuring the network. 2) Debian is suitable for advanced usage, such as using LXC to manage containers. 3) RockyLinux can optimize performance by adjusting kernel parameters.

The CentOS shutdown command is shutdown, and the syntax is shutdown [Options] Time [Information]. Options include: -h Stop the system immediately; -P Turn off the power after shutdown; -r restart; -t Waiting time. Times can be specified as immediate (now), minutes ( minutes), or a specific time (hh:mm). Added information can be displayed in system messages.

The key differences between CentOS and Ubuntu are: origin (CentOS originates from Red Hat, for enterprises; Ubuntu originates from Debian, for individuals), package management (CentOS uses yum, focusing on stability; Ubuntu uses apt, for high update frequency), support cycle (CentOS provides 10 years of support, Ubuntu provides 5 years of LTS support), community support (CentOS focuses on stability, Ubuntu provides a wide range of tutorials and documents), uses (CentOS is biased towards servers, Ubuntu is suitable for servers and desktops), other differences include installation simplicity (CentOS is thin)

Steps to configure IP address in CentOS: View the current network configuration: ip addr Edit the network configuration file: sudo vi /etc/sysconfig/network-scripts/ifcfg-eth0 Change IP address: Edit IPADDR= Line changes the subnet mask and gateway (optional): Edit NETMASK= and GATEWAY= Lines Restart the network service: sudo systemctl restart network verification IP address: ip addr


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